public class example19{public static void main(String[] args){
    int[] arr=new int[3];
    arr[0]=1;
    arr[1]=3;
    System.out.println("arr[0]" + arr[0]);
    System.out.println("arr[1]" + arr[1]);
    System.out.println("arr[2]" + arr[2]);

}
}